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Ericsson Exam ECP-206 Topic 1 Question 21 Discussion

Actual exam question for Ericsson's ECP-206 exam
Question #: 21
Topic #: 1
[All ECP-206 Questions]

In an Ethernet frame carrying a VLAN tag, where does the VLAN tag appear?

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Suggested Answer: C

In an Ethernet frame carrying a VLAN tag, the VLAN tag appears before the type field. A VLAN tag is a 4-byte field that is inserted into an Ethernet frame to indicate the VLAN membership and priority of the frame. The VLAN tag consists of two subfields: the tag protocol identifier (TPID) and the tag control information (TCI). The TPID subfield is a 16-bit field that identifies the frame as an IEEE 802.1Q-tagged frame, with a value of 0x8100. The TCI subfield is a 16-bit field that contains the priority code point (PCP), the drop eligible indicator (DEI), and the VLAN identifier (VID). The VLAN tag appears between the source MAC address and the type fields of the original frame, shifting the type field by four bytes. The type field indicates the type of the payload, such as IP or ARP .


by Valene at Jun 30, 2024, 08:08 AM

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Annita
4 months ago
I'm just going to guess and hope for the best. VLAN tags? More like YOLO tags, am I right? Let's move on to the next question, this one's giving me a headache.
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Tula
3 months ago
D) after the length field
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Tricia
3 months ago
C) before the type field
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Domitila
3 months ago
A) after the type field
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Rory
4 months ago
I agree with Brynn, it should be after the type field for better organization.
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Hildred
4 months ago
Hmm, C) before the type field, that's the answer I'm betting on. Unless the VLAN tag is supposed to be hidden in the ethernet frame, like a secret surprise for the network admin.
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Laquita
3 months ago
I agree with you, C) before the type field seems like the right placement for the VLAN tag.
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Brunilda
3 months ago
I'm going with B) before the length field.
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Juan
3 months ago
I think it's A) after the type field.
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Felice
3 months ago
I'm pretty sure it's D) after the length field.
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Rebbecca
3 months ago
I believe it's C) before the type field.
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Trevor
4 months ago
I think it's A) after the type field.
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Brynn
4 months ago
But wouldn't it make more sense for it to be after the type field?
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Roxane
4 months ago
I believe it appears after the length field.
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Martina
4 months ago
B) before the length field, that's where the magic happens! Or is it the unicorn field? Either way, I'm feeling confident about this one.
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Ardella
3 months ago
D) after the length field
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Jeannetta
4 months ago
C) before the type field
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Vicki
4 months ago
B) before the length field
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Cassie
4 months ago
A) after the type field
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Brynn
4 months ago
I think the VLAN tag appears before the type field.
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Janessa
4 months ago
D) after the length field, no doubt about it. I've seen it in the networking standards, can't go wrong with that.
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Dante
5 months ago
I'm going with A) after the type field, seems like the logical place for the VLAN tag. Who needs to know these tiny details anyway?
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Laila
4 months ago
I'm pretty sure it's A) after the type field as well.
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Valentin
4 months ago
I think it's actually C) before the type field.
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Javier
5 months ago
C) before the type field, that's where the VLAN tag belongs in an Ethernet frame. Easy peasy!
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Ria
4 months ago
B) before the length field
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Davida
4 months ago
A) after the type field
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